Cultivator attachment for tractors



p 9, 1952 E. EVENSON CULTIVATOR ATTACHMENT FOR TRACTORS 2 SHEETS-SHEET 1 Filed Aug. 30, 1948 v Qn NW gwucm tom E r1263 2 Erensolz ATTORNEY P 9, 1952 E. EVENSON CULTIVATOR ATTACHMENT FOR TRACTORS 2 SHEETS-SHEET 2 Filed Aug. 30, 1948 Ernest Evenson a control lever provided on the Patented Sept. 9, .1952

CULTIVATOR ATTACHMENT FOR r TRACTORS- Ernest Evenson, East Grand Forks, Minn. Application August so, 1948, Serial No. 46,855

The invention relates to agricultural machincry and more particularly to an improved cultivator especially adaptedto be used to cultivate beets, beansand the like. v i a p {Ihe primary object of the invention is toprovide a cultivator of the class indicated above and adapted to be secured on a tractorin front of its front wheels.

Another object of the invention is to provide a cultivator of the character indicated above and adapted to be adjusted and controlled by the tractor on which the cultivator is secured.

A further object of the invention is to provide a cultivator adapted to be secured on a tractor 7 so that the operator of the tractor has a clear view of the field to be worked on.. i

An additional object of the invention is t provide a cultivator of the characterindicated above adapted to be secured at the front end of a trac tor equipped with hydraulic gears for controlling machinery attached to the draw bar of the tractor, and adapted to be adjusted and controlled by the control lever of the hydraulic tractor equipment.

Other objects of the invention not specifically mentioned may appear in the following specification describing the invention with reference to the accompanying drawings illustrating a preferred embodiment of the invention. It is, however, to be understood that the invention is not to be limited or restricted to the exact construction, combination and arrangement of parts described in the specification'and shown in the drawings, but that such changes and modifications can be madeQwhich fall within the scope of the claims appended hereto.

In the several figures of the accompanying drawings similar parts are indicated by similar reference characters and Figure l is a view in side elevation illustrating a cultivator constructed in accordance with an embodiment of the invention and in applied position, a portion of the tractor being broken away;

Figure 2 is a view in perspective of the apparatus as herein comprised with parts omitted, an associated tractor being diagrammatically indicated by broken lines;

Figure 3 is a fragmentary view in top plan of the rear portion of the structure as shown in Figure 1;

Figure 4 is an enlarged sectional view taken substantially on the line of 4-4 of Figure 1;

Figure 5 is a detail sectional view taken substantially on the line 5--5 of Figure 1;

v t 1 Claim. (01. 9747) t Figure 6 is adetail sectional view taken substantially onthe line 6-6 of Figure 1; and

Figure 7 isfa detail-sectional view taken substantially on the line l.-| of Figure 2.

The cultivator as herein embodied comprises a tool frame F preferably made fromstructural steel such as channels, angles and the like and adapted to support a plurality of cultivating tools In, such as rotatably mounted disks and the like. Preferably the frame hasa rectangular shape and comprises a main rear member I l, two side end members l2 and i3 respectively and two front members l4. Two upwardly extending angle irons l5 aresecurely fastened with their lower end portions to the rear frame member I i spaced from eachother and equidistantly from the ends of said frame member. Onto the upper end portion of each upright angle ironl5 a brace rod [6 is weldedand extends downwardly. and forwardly. The lower end portion of each brace rod I6 is fastened to the front frame member I. Each of the upright angle irons I5 is provided in its lower end portion with a plurality of holes H. A lever B, in the form of an inverted T, has its base member indicated at I8 and its upright member at 19, the latter being braced by a. member 20 extending at an incline between the same and the rearward portion of the base member. There are two levers B and one of the same is pivotally secured to each upright angle iron [5 by means of a bolt 2| or the like extending through the front endportion of the bracket base member l8 and through any selected hole I! in the respective angle iron IS.

The rear end portion of each base member I8 is pivotally connected with the forward end of a rearwardly extending heavy side beam 22 by means of a bolt 23 or the like, and in each side beam a hole 24 is provided adjacent the forward end thereof.

Two angle brackets 25 are fastened on opposite sides of the tractor frame and forwardly of the rear axle 26; the tractor being of the kind equipped with hydraulic mechanism for controlling machinery secured to the draw bar of said tractor, and preferably the bolts holding the rear wheel fenders are used for this purpose. The rear end portions of the side beams 22 are pivotally fastened on the angle bracket shaped brackets 28 which serve the purpose of can be shortened or lengthened by adjusting respective turn buckle.

On each of the two standard lifting arms 2dof the hydraulic mechanism of the tractor a bracket 38 is clampingly mounted and the rear' end portion of an adjusting rod 33 is pivotally A pul1 rod is fastened on each bracket 38.

adjustably connected with the rod 39 by means of a turn buckle M and the front end portion of the rod id is pivotally secured to theverticalarrn it or the lever B, above theattached end cf the brace member 20;, by means of a bolt s2 extend ing through one of a series of apertures {it formed in the front end portion of the rod in and through any one ofa series ofapertures as provided in each of the upright bracket menu bers I9. I

The normal disposition of the tool frame F can be' adjusted by lengthening or shortening the tension members 3| by means of the-turn buckles 36 and by correspondingly lengthening or shorteningthe combined length of the rods .39 and dd by means of the turn buckles ill In addition to that the tool frame-F is-adapted to be adjusted vertically by selecting'any one of a series of holes I! in the upright angle irons E5.

The lifting arms 31, when actuatedby the hydraulic equipment of the tractor, exert a rear-, ward pull on the interconnected rods Bt and id and the vertical arms 19 of the levers B, so that the horizontal arms 1 8 are swung upwardly'froni the pivot connections 23, with the side bars 22,

and aifect a lifting movement of the tool frame 7 F, thereby elevating the cultivator tools 0 from ground contact, or peneration. A reverse move ment of the arms 31 will result in a lowering of the tool frame F and set the tools 10 in their working positions as predetermined by the aforesaid adjustments of the rods 3! and do.

I claim: A cultivator attachment for tractors, comprising a'toolfsupporting frame positioned forwardly of the'fr'ont end of the tractor, bars extending horizontally at opposite sides of the tractor and having pivot connections at their rear'ends with :the tractor frame, brackets carried by the tractor frame for supporting the forward end portions of said bars, transversely spaced vertical 'rne'mber's carried'by said tool frame, brace members having pivot connections with said bars adjacentl the rear ends'thereof and with the upper ends" of'said vertical members, inverted T-shaped levers having the lower portion thereof extending'between' and pivotally connecting the forw re-endear said bars with the lower ends of said; verticalrnember s; means extending rearwardly from vertical 'portions'of'said levers for afiecting the'a djustrnent of said tool frame and the'toolsc'a'rried thereby relatively to the round. r

ERNEST EVE-NEON.

Remittances orrnn The following references are of record in the me Of this atent:

UNITED STATES PATENTS "Moran July 2 3, 

